10th Training School on Microencapsulation

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Publ. : 12 FEB. 2018 - Deadline : 12 MAY 2018

Development and Characterization of Microencapsulation Systems for Bioactive Ingredients of Interest in the Development of Functional Foods

Laura G. Gomez-Mascaraque (Supervisor: Amparo Lopez-Rubio) Institute of Agrochemistry and Food Technology (IATA-CSIC), Valencia (Spain) 12/12/2017.
he aim of the present work was to design and characterize novel encapsulation structures of interest in the development of functional foods. For this purpose, various biopolymer-based microencapsulation structures were obtained through different processing technologies, with an emphasis on electrospraying as an advantageous alternative to conventional microencapsulation techniques.
Firstly, novel microencapsulation structures were produced from aqueous solutions and in mild conditions by electrospraying, using different biopolymers as encapsulation matrices. For this purpose, the processing conditions were optimized and the relationship between the feed solution properties and the morphology of the electrosprayed materials was studied.
The developed microstructures were then used to microencapsulate model bioactive ingredients with different properties, including hydrophilic molecules, hydrophobic compounds and probiotic microorganisms. For the hydrophobic ingredients, different strategies were evaluated in order to disperse them within the aqueous biopolymer solutions, such as the preparation of emulsions and liposome dispersions prior to electrospraying. An in-line setup for the continuous mixing of liposomes with the biopolymer and their subsequent hybrid capsule formation was also developed by combining microfluidic and electrospraying technologies. For the probiotic microorganisms, the convenience of preparing the feed suspensions from fresh culture or freeze-dried bacteria, as well as the impact of adding a surfactant and a prebiotic carbohydrate to the formulation, were also evaluated.
The performance of the proposed encapsulation systems was evaluated in terms of microencapsulation efficiency, stabilization of the bioactive ingredients against degradation under detrimental conditions and/or their impact on the bioaccessibility of the microencapsulated ingredients after in-vitro digestion.
Spray-drying was also used to microencapsulate some of the bioactive ingredients, in order to compare the results obtained through electrospraying with a more conventional encapsulation technique and using different encapsulation matrices.
Additionally, a novel concept of bio-inspired encapsulation was proposed in this thesis: the potential of intact plant cells isolated from potato tubers to bind phenolic compounds was explored, and the impact of starch gelatinization on the loading capacity of these proposed encapsulation vehicles was also assessed.
Finally, the impact of microencapsulation in real food systems was also studied. Yoghurts and biscuits were enriched with a peptide hydrolysate and a green tea extract, respectively, and the stabilization effect of the protective matrices during food manufacturing was assessed. The consumers’ acceptability of the enriched biscuits was also studied.

Searching for A Postdoc Position on Encapsulation Systems of Bioactive Materials

I received my Ph.D. degree in December 2017 from Istanbul Technical University, Food Engineering Department, Turkey under the supervision of Prof. Dr Dilek Boyac?o?lu. I have studied the effects of liposome encapsulation, spray drying, and ascorbic acid presence on color stability of black carrot anthocyanins during my Ph.D. I have conducted part of my thesis in the laboratory of Prof. Dr. Jochen Weiss at the University of Hohenheim, Germany. Additionally, I have also performed the characterization of emulsions with structurally different interfaces (single layered, double layered, and coacervate stabilized) and investigated spray drying ability of these emulsions.
Apart from these subjects, I am experienced on research activities on antioxidant properties and bioaccessibility of bioactive compounds found in several plant origin food components. I am also interested in investigating the interaction of food components (proteins, nanofibers, phenolics) and different encapsulation techniques of aroma and phenolic compounds.
I am searching for a Postdoc position in Europe, US, or Canada and the summary of topics I am interested in are the encapsulation of bioactive compounds, emulsion formation and stabilization, protein characterization and purification.Languages: English (advanced), German (intermediate)
https://www.researchgate.net/profile/Burcu_Guldiken - https://www.linkedin.com/in/burcu-guldiken-2b882117/

The meeting is the 12th in the ISP series of conferences started in 1995, on the physics and physical chemistry of polyelectrolytes, with a focus on u derstanding how electrostatic interactions determine and influence the behaviour of synthetic and biological charged macromolecules in solution, in complexes and at interfaces. We aim at continuing the success of the 11th edition in Moscow (2016) by providing a stimulating forum with prominent keynote and invited speakers, ample opportunities for oral and poster presentations, and plenty of opportunities to discuss and interact with colleagues. Wageningen is conveniently located, just one hour by public transport from Amsterdam Airport Schiphol.

Elaboration of anti-inflammatory textiles based on eco-friendly microcapsules.

Hanoi University of Science and Technology, Vietnam and University Claude Bernard Lyon 1, France. February 8, 2018/
The use of the microcapsules made from eco-friendly materials for medical textile applications has been researched and developed strongly in recent years. The aim of this thesis is to elaborate the anti-inflammatory textiles basing on eco-friendly microcapsules, using three kinds of textile materials (cotton, peco 65/35 and polyester)and five levels of the loop length (2.81, 2.83, 2.87, 2.96 and 3.05 mm) on the cotton interlock knitted fabrics (yarn count Ne40). The influences of the saponin concentration, the stirring rate during the emulsification step and the volume of ethyl acetate added to the aqueous phase on the characteristics of the microcapsules were studied. The influence of condition in drying on microcapsule's morphology was also investigated. The thesis also researched the effects of cotton mass ratio and loop length of fabric on the microcapsule distribution, the microcapsule loading capability and the release capability of ibuprofen from the microcapsule treated fabrics. The Eudragit RSPO microcapsules containing ibuprofen were successfully elaborated by solvent evaporation technique, using the bio-sourced surfactant quillaja saponin and the non-halogenated solvent ethyl acetate. The obtained microcapsules exhibited the spherical shapes with d(0.5) diameter of 21.5 m, suitable for the textile applications. It was found that in order to keep the microcapsules from deformation during the textile finishing, the drying stage should be carried out in vacuum at 45oC. When the content ratio of cotton fibers in the fabric increased, the microcapsule distribution was less even, resulting in the lower release rate of ibuprofen from the microcapsule-treated fabrics. Besides, when the loop length increased, the microcapsule loading capability of the treated fabrics increased, the microcapsule distribution on the fabric became less even and the release rate of ibuprofen from the microcapsule-treated fabrics decreased. Furthermore, increasing the fabric extension favored the release of ibuprofen from the microcapsule-treated fabrics through the pigskin.

How to produce a regular arrangement of droplets of a first liquid in a continuous jet of a second liquid

Inventors from Graz University of Technology are able to provide a technology capable of combining control, adjustability and regularity obtained for pherical capsules produced via microfluidics with the ease of capsule assemblies manipulation offered by fibres or bulk matrices. This ground breaking feature is obtained via the unique topology produced, which consists in a free flowing continuous cylindrical jet containing spherical regular inclusions with a defined spatial periodicity. The production of this structure is achieved via the collision of at least one continuous stream of regular droplets with one cylindrical free flowing jet of another immiscible liquid. The droplet diameter, the droplet spacing and the jet diameter can be independently controlled and varied. The resulting structure can then be hardened, using state of the art principles such as solvent exchange, sol-gel transition, freezing. The hardening step can be performed on the liquid jet only, leaving the inclusions liquid, or on both materials.
If you are interested, please use the link or make contact via email alexander.muhr@tugraz.at

Introduction to Microencapsulation Workshop
March 26-27, 2018

The Southwest Research Institute, San Antonio, TX proposes a workshop on microencapsulation and nanoencapsulation including common encapsulation techn ques and formulations. The course will include demonstrations, equipment use, and an overview of the current challenges and advancements in the field. Along with insight about materials, process scale, and applications, you will have an opportunity to tour the SwRI encapsulation facilities. The course is geared for scientists, engineers, or business professionals interested in learning about current and emerging encapsulation technologies and practices.

We are please to invite you to register for the next 21st Microencapsulation Industrial Convention. A combination of expert presentations, exhibitions and a business to business trade fair (hundreds of individual meetings). Register soon to get low registration fees and get an exceptional accommodation rate at the 4 starts convention hotel.

BIOBARRIERS 2018 - 27 – 29 August 2018 in Saarbrücken, Germany

The 12th International Conference and Workshop on Biological Barriers is an international scientific event, organized every two years and receiving co stantly 200+ registered attendees from all over the world.
In the focus of BioBarriers 2018 are human cell and tissue models for facilitating clinical translation of new drugs and delivery systems, especially in the context of infectious diseases. Moreover, we will discuss innovative concepts and materials, also capable to overcome non-cellular diffusion barriers such as mucus or bacterial biofilms, concluding the conference with sessions on extracellular vesicles and advanced nanomedicines for non-invasive delivery of macromolecular biopharmaceuticals. Target audiences are early stage researchers as well as experienced scientists and professionals from academia and the pharmaceutical industry.